EP0369903A1 - Process for the connexion and assembly of tubular elements, particularly for producing a bicycle frame, and the frame produced thereby - Google Patents

Process for the connexion and assembly of tubular elements, particularly for producing a bicycle frame, and the frame produced thereby Download PDF

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Publication number
EP0369903A1
EP0369903A1 EP19890420439 EP89420439A EP0369903A1 EP 0369903 A1 EP0369903 A1 EP 0369903A1 EP 19890420439 EP19890420439 EP 19890420439 EP 89420439 A EP89420439 A EP 89420439A EP 0369903 A1 EP0369903 A1 EP 0369903A1
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EP
European Patent Office
Prior art keywords
fitting
additional
elements
connection
tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19890420439
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German (de)
French (fr)
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EP0369903B1 (en
Inventor
Alain Darrin
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T.V.T. COMPOSITE
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TVT COMPOSITE
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Publication date
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Priority to AT89420439T priority Critical patent/ATE93462T1/en
Publication of EP0369903A1 publication Critical patent/EP0369903A1/en
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Publication of EP0369903B1 publication Critical patent/EP0369903B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B11/00—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding
    • F16B11/006—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding by gluing
    • F16B11/008—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding by gluing of tubular elements or rods in coaxial engagement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K19/00—Cycle frames
    • B62K19/18—Joints between frame members
    • B62K19/22—Adhesive joints
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49881—Assembling or joining of separate helix [e.g., screw thread]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/47—Molded joint
    • Y10T403/471—And independent connection
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/47—Molded joint
    • Y10T403/472—Molded joint including mechanical interlock
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/55—Member ends joined by inserted section
    • Y10T403/556—Section threaded to member

Definitions

  • connection between the tubular elements and the sleeves generally has sufficient strength.
  • certain zones are subjected to very violent, repetitive forces and more particularly at the level of the connection supporting the crankset.
  • this zone as a result of the tensile forces which are exerted, there may be, in the long run, a play or even a tearing of the tube from the connection fitting.
  • the invention relates to an improvement made to the method of connecting and assembling tubular elements, method in which the connection of the different tubes to each other is obtained by means of fittings or sleeves, the ends of these two elements being fitted one inside the other and the connection being obtained by gluing, the method according to the invention being characterized in that, after fitting the two parts one inside the other and before setting of the adhesive, an additional connector is inserted inside one of the elements, a part of which "presses" against the inside of the surface of the element inside which it is introduced, and the other part of which is screwed inside the second element, the final setting of the adhesive being carried out after this additional joining element has been put in place.
  • plat within the meaning of the present invention, is meant not only the case where the surfaces are truly in mutual contact, but also that where a slight clearance remains between said surfaces, for example as a result of manufacturing tolerances, this clearance being filled with glue that leaks when installing the additional fitting.
  • the additional connector is introduced inside the tubular element and is screwed to the inside the fitting itself.
  • this fitting being either cylindrical or slightly conical, the head of the additional fitting element is pressed against a surface forming a stop in the form of an inclined plane (and at the limit orthogonal to the assembly axis), which further strengthens the connection between the two elements.
  • the threaded parts of the additional fitting and of the corresponding zone in which the screwing is carried out are preferably cylindrical, they could possibly be slightly conical.
  • the surface of the head of the additional connecting element is preferably smooth, but could possibly have a different surface finish, for example having ridges, raised and recessed portions, in order to strengthen the connection. between the elements.
  • a perfect and unbreakable connection is obtained between the fitting and the tube fixed to the latter.
  • Such a method is particularly suitable for joining the tubular elements of a bicycle frame with the bottom bracket, an area which is subjected to very significant stresses during use.
  • the additional connection element is introduced inside the tubes of the frame, bears against a peripheral crown of smaller diameter than the internal diameter of the tube, and is screwed inside a additional part provided in the bottom bracket fittings.
  • the invention therefore relates to an improvement made to the method of connecting and assembling tubular elements, designated by the general reference (1) in the following description, method in which the connection of different tubes between them is obtained by means of fittings or sleeves, designated by the general reference (2).
  • the ends of these two elements are nested inside one another and the connection is obtained by gluing.
  • Such a method could be used, as shown in Figure 1, to achieve the junction of the different tubes (1a, 1b, 1c) with the bottom bracket B of a bicycle frame.
  • the housing comprises, after depositing glue on one or the other of the surfaces intended coming into contact, there is introduced inside one of the elements, in the present case inside each tube, an additional fitting (4a, 4b, 4c), a part of which presses against the inside of the surface of the element inside which it is introduced, and of which the other part is screwed inside the second element, the final setting of the glue being carried out after installation of this additional joining element .
  • FIG. 2 form in which the tubular element (1) is fitted around the surface (3) of the housing B, the fitting of these two elements being carried out either concentrically or by providing a slight slope similar to an interlocking type Morse cone well known in the field of mechanics, that is to say a fitting having a taper of about 1/20 and which allows to obtain not only a centering, but an excellent blocking
  • the additional element (4) is essentially in the form of a "plug" of which the accessible part or "head” (5) from outside the tube (1) has a recess (for example with a hexagon socket) in order to be able to actuate it, and the downstream part or "connecting rod” (6 ) has a threaded area (7).
  • the additional element or plug (3) is introduced inside the tube (1) so that the peripheral surface (8) of the head (5) comes to rest and press against the inside of the surface (9 ) of the tube (1) which is in the form of a peripheral crown of smaller diameter than the diameter D of said tube (1).
  • This peripheral crown is, in the embodiment illustrated in FIG. 2, constituted by a frustoconical part obtained by molding during the production of said tube (1) and the cross section of which decreases towards the end (10) of the tube.
  • the connecting rod (6) of the additional connector (3) for its part, is screwed inside a complementary part (11) formed in the connector (3) of the housing B.
  • FIG. 3 illustrates a variant of the connection method illustrated in FIG. 2 in which the tube (1) is also fitted around the connection fitting (3).
  • the head (5) presses not against an inclined plane (8) formed inside the tube (1), but against an internal crown, also designated by the reference (8) and located orthogonally relative to to the XX axis of the assembly.
  • FIG. 4 illustrates another form of implementation of the method according to the invention in which the fitting of the tube (1) is carried out not around the connector (3), but inside the latter.
  • the final connection of the tube and the connector is obtained by means of an additional connector (4), part of which comes to press against the inside of the surface of the element inside which it has been introduced (in in this case the tube), and the other part of which is screwed inside the second element.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Motorcycle And Bicycle Frame (AREA)

Abstract

Process for connecting and assembling tubular elements, according to which the various tubes (1) are joined to one another by connectors or sleeves (2), the ends (10-3) of these two elements being fitted one inside the other and the bond being obtained by adhesive bonding. The process is distinguished by the fact that, after fitting the two members one inside the other and before the adhesive has set, an additional connector (4) is introduced inside one of the elements, one part (5) of the additional connector being pressed against the inside of the surface (8) of the element inside which it has been introduced, and the other part (6) of the additional connector being screwed inside the second element, the final setting of the adhesive taking place after installation of this additional joining element.

Description

Dans le domaine technique de l'assemblage ou du raccordement d'éléments tubulaires, il a été proposé depuis fort longtemps de substituer aux techniques clas­siques d'assemblage faisant appel au soudage, emboitement forcé, vissage.., des techniques de collage, comme cela ressort notamment du brevet français 2 142 171, du brevet britannique 575,144, et des brevets français 2 331 475 et 2 373 436.In the technical field of assembly or connection of tubular elements, it has been proposed for a very long time to replace conventional assembly techniques using welding, forced interlocking, screwing, bonding techniques, like this. is particularly apparent from French patent 2,142,171, British patent 575,144, and French patents 2,331,475 and 2,373,436.

Ces techniques de collage sont particulièrement appréciées dans tous les cas où l'on souhaite obtenir un allègement et sont notamment utilisées lorsque l'on sou­haite raccorder entre eux plusieurs tubes au moyen de raccords additionnels permettant d'obtenir une structure dans laquelle les tubes sont orientés différemment les uns par rapport aux autres, tels que notamment pour for­mer un cadre de bicyclette.These bonding techniques are particularly appreciated in all cases where it is desired to obtain a lightening and are in particular used when it is desired to connect several tubes together by means of additional connectors making it possible to obtain a structure in which the tubes are oriented. differently from each other, such as in particular for forming a bicycle frame.

Dans la suite de la description, l'invention sera décrite plus particulièrement pour cette application, mais elle pourrait être éventuellement mise en oeuvre dans d'autres domaines où se posent des problèmes simi­laires.In the following description, the invention will be described more particularly for this application, but it could possibly be implemented in other fields where similar problems arise.

Ainsi que cela ressort des documents précités, la réalisation de cadres de bicyclettes par assemblage et collage d'éléments tubulaires au moyen de manchons de raccordement est connue depuis fort longtemps.As is apparent from the aforementioned documents, the production of bicycle frames by assembly and gluing of tubular elements by means of connection sleeves has been known for a very long time.

Compte tenu du développement des colles, la liaison entre les éléments tubulaires et les manchons présente en général une résistance suffisante. Cependant, en ce qui concerne le cadre d'une bicyclette, certaines zones sont soumises à des efforts très violents, répétitifs et plus particulièrement au niveau du raccord supportant le pédalier. En effet, dans cette zone, par suite des ef­forts de traction qui s'exercent, il peut se produire, à la longue, un jeu voire même un arrachement du tube du raccord de liaison.Given the development of adhesives, the connection between the tubular elements and the sleeves generally has sufficient strength. However, with regard to the frame of a bicycle, certain zones are subjected to very violent, repetitive forces and more particularly at the level of the connection supporting the crankset. In fact, in this zone, as a result of the tensile forces which are exerted, there may be, in the long run, a play or even a tearing of the tube from the connection fitting.

Or on a trouvé, et c'est ce qui fait l'objet de la présente invention, qu'il était possible, de manière simple et efficace, de résoudre ce problème et d'élimi­ner pratiquement tout risque d'arrachement au niveau de la zone de jonction du tube et de l'élément de raccorde­ment.However, it was found, and this is the subject of the present invention, that it was possible, in a simple and effective manner, to resolve this problem and to eliminate practically any risk of tearing away at the level of the junction area of the tube and the connecting element.

D'une manière générale, l'invention concerne un perfectionnement apporté au procédé de raccordement et d'assemblage d'éléments tubulaires, procédé dans lequel la liaison des différents tubes entre eux est obtenue au moyen de raccords ou manchons, les extrémités de ces deux éléments étant emboitées l'une à l'intérieur de l'autre et la liaison étant obtenue par collage, le procédé selon l'invention se caractérisant en ce que, après emmanche­ment des deux pièces l'une à l'intérieur de l'autre et avant prise de la colle, on introduit à l'intérieur de l'un des éléments un raccord additionnel dont une partie vient "plaquer" contre l'intérieur de la surface de l'élément à l'intérieur duquel il est introduit, et dont l'autre partie vient se visser à l'intérieur du second élément, la prise définitive de la colle étant réalisée après mise en place de cet élément de jonction additionnel.In general, the invention relates to an improvement made to the method of connecting and assembling tubular elements, method in which the connection of the different tubes to each other is obtained by means of fittings or sleeves, the ends of these two elements being fitted one inside the other and the connection being obtained by gluing, the method according to the invention being characterized in that, after fitting the two parts one inside the other and before setting of the adhesive, an additional connector is inserted inside one of the elements, a part of which "presses" against the inside of the surface of the element inside which it is introduced, and the other part of which is screwed inside the second element, the final setting of the adhesive being carried out after this additional joining element has been put in place.

Par "placage" au sens de la présente invention, on entend non seulement le cas où les surfaces sont vérita­blement en contact mutuel, mais également celui où un léger jeu subsiste entre lesdites surfaces, par exemple par suite des tolérances de fabrication, ce jeu étant comblé par la colle qui flue lors de la mise en place du raccord additionnel.By “plating” within the meaning of the present invention, is meant not only the case where the surfaces are truly in mutual contact, but also that where a slight clearance remains between said surfaces, for example as a result of manufacturing tolerances, this clearance being filled with glue that leaks when installing the additional fitting.

De préférence, notamment lorsque les tubes sont réalisés à partir de "matériaux composites" tels que ceux faisant l'objet du brevet français 2 546 473, le raccord additionnel est introduit à l'intérieur de l'élément tubulaire et vient se visser à l'intérieur du raccord proprement dit. Dans cette forme de réalisation, notam­ment lorsque le tube est emmanché à l'extérieur du rac­cord, cet emmanchement pouvant être soit cylindrique soit légèrement conique, la tête de l'élément de raccord ad­ditionnel vient plaquer contre une surface formant butée en forme de plan incliné (et à la limite orthogonal à l'axe d'assemblage), ce qui renforce encore la liaison entre les deux éléments.Preferably, in particular when the tubes are made from "composite materials" such as those forming the subject of French patent 2,546,473, the additional connector is introduced inside the tubular element and is screwed to the inside the fitting itself. In this embodiment, in particular when the tube is fitted outside the fitting, this fitting being either cylindrical or slightly conical, the head of the additional fitting element is pressed against a surface forming a stop in the form of an inclined plane (and at the limit orthogonal to the assembly axis), which further strengthens the connection between the two elements.

Par ailleurs, si les parties filetées du raccord additionnel et de la zone correspondant dans laquelle est réalisé le vissage sont de préférence cylindriques, elles pourraient éventuellement être légèrement coniques. De plus, la surface de la tête de l'élément de raccord additionnel est de préférence lisse, mais pourrait éven­tuellement avoir un état de surface différent, par ex­emple présenter des stries, des parties en relief et en creux, en vue de renforcer la liaison entre les éléments.Furthermore, if the threaded parts of the additional fitting and of the corresponding zone in which the screwing is carried out are preferably cylindrical, they could possibly be slightly conical. In addition, the surface of the head of the additional connecting element is preferably smooth, but could possibly have a different surface finish, for example having ridges, raised and recessed portions, in order to strengthen the connection. between the elements.

Grâce à un tel procédé de fabrication, on obtient une liaison parfaite et indétériorable entre le raccord et le tube fixé à ce dernier. Un tel procédé est particu­lièrement adapté pour réaliser la jonction d'éléments tubulaires d'un cadre de bicyclette avec le raccord de pédalier, zone qui est soumise à des contraintes très importantes en cours d'utilisation. Dans une telle ap­plication, l'élément de raccordement additionnel est introduit à l'intérieur des tubes du cadre, prend appui contre une couronne périphérique de plus faible diamètre que le diamètre interne du tube, et vient se visser à l'intérieur d'une partie complémentaire prévue dans les raccords du boitier de pédalier.Thanks to such a manufacturing process, a perfect and unbreakable connection is obtained between the fitting and the tube fixed to the latter. Such a method is particularly suitable for joining the tubular elements of a bicycle frame with the bottom bracket, an area which is subjected to very significant stresses during use. In such an application, the additional connection element is introduced inside the tubes of the frame, bears against a peripheral crown of smaller diameter than the internal diameter of the tube, and is screwed inside a additional part provided in the bottom bracket fittings.

L'invention et les avantages qu'elle apporte seront cependant mieux compris grâce aux exemples de réalisa­tion donnés ci-après à titre indicatif, mais non limita­tif et qui sont illustrés dans les schémas annexés dans lesquels :

  • - la figure 1 est une vue schématique de côté d'un boitier de pédalier d'un cadre de bicyclette réalisé conformément au procédé selon l'invention ;
  • - les figures 2,3 et 4 sont des vues en coupe lon­gitudinales illustrant différents modes de mise en oeu­vre du procédé conforme à l'invention ;
  • - la figure 5 illustre une variante selon laquelle l'élément additionnel est introduit non pas à l'inté­rieur du tube, mais à l'intérieur du raccord et vient se visser à l'intérieur du tube.
The invention and the advantages which it brings will however be better understood thanks to the exemplary embodiments given below for information, but not limitation and which are illustrated in the appended diagrams in which:
  • - Figure 1 is a schematic side view of a bottom bracket of a bicycle frame made according to the method according to the invention;
  • - Figures 2,3 and 4 are views in longitudinal section illustrating different modes of implementation of the method according to the invention;
  • - Figure 5 illustrates a variant according to which the additional element is introduced not inside the tube, but inside the fitting and is screwed inside the tube.

Si l'on se reporte aux schémas annexés, l'invention porte donc sur un perfectionnement apporté au procédé de raccordement et d'assemblage d'éléments tubulaires, dési­gnés par la référence générale (1) dans la suite de la description, procédé dans lequel la liaison des différent tubes entre eux est obtenue au moyen de raccords ou man­chons, désignés par la référence générale (2). Les ex­trémités de ces deux éléments sont imbriquées l'une à l'intérieur de l'autre et la liaison est obtenue par collage. Un tel procédé pourrait être utilisé, ainsi que cela ressort de la figure 1, pour réaliser la jonction des différents tubes (1a,1b,1c) avec le boitier B de pédalier d'un cadre de bicyclette.If reference is made to the appended diagrams, the invention therefore relates to an improvement made to the method of connecting and assembling tubular elements, designated by the general reference (1) in the following description, method in which the connection of different tubes between them is obtained by means of fittings or sleeves, designated by the general reference (2). The ends of these two elements are nested inside one another and the connection is obtained by gluing. Such a method could be used, as shown in Figure 1, to achieve the junction of the different tubes (1a, 1b, 1c) with the bottom bracket B of a bicycle frame.

Conformément à l'invention, pour la liaison des différents tubes (1a,1b,1c) avec les portées complémen­taires (3a,3b,3c) que comporte le boitier, après dépôt de colle sur l'une ou l'autre des surfaces destinées à venir en contact, on introduit à l'intérieur de l'un des éléments, dans le cas présent à l'intérieur de chaque tube, un raccord additionnel (4a,4b,4c) dont une partie vient plaquer contre l'intérieur de la surface de l'élé­ment à l'intérieur duquel il est introduit, et dont l'au­tre partie vient se visser à l'intérieur du second élé­ment, la prise définitive de la colle étant réalisée après mise en place de cet élément de jonction addition­nel.In accordance with the invention, for the connection of the various tubes (1a, 1b, 1c) with the complementary surfaces (3a, 3b, 3c) that the housing comprises, after depositing glue on one or the other of the surfaces intended coming into contact, there is introduced inside one of the elements, in the present case inside each tube, an additional fitting (4a, 4b, 4c), a part of which presses against the inside of the surface of the element inside which it is introduced, and of which the other part is screwed inside the second element, the final setting of the glue being carried out after installation of this additional joining element .

Différentes formes de mise en oeuvre du procédé conforme à l'invention peuvent être envisagées. Selon une forme préférentielle illustrée par la figure 2, forme selon laquelle l'élément tubulaire (1) est emmanché au­tour de la portée (3) du boitier B, l'emmanchement de ces deux éléments étant réalisé soit concentriquement soit en prévoyant une légère pente similaire à un emboitement du type cône Morse bien connu dans le domaine de la mécani­que, c'est-à-dire un emmanchement ayant une conicité de 1/20 environ et qui permet d'obtenir non seulement un centrage, mais un excellent blocage, l'élément addition­nel (4) se présente essentiellement sous la forme d'un "bouchon" dont la partie accessible ou "tête" (5) depuis extérieur du tube (1) présente un évidement (par ex­emple à six pans creux) pour pouvoir l'actionner, et la partie aval ou "tige de liaison" (6) présente une zone filetée (7). L'élément additionnel ou bouchon (3) est introduit à l'intérieur du tube (1) de telle sorte que la surface périphérique (8) de la tête (5) vienne prendre appui et plaquer contre l'intérieur de la surface (9) du tube (1) qui se présente sous la forme d'une couronne périphérique de plus faible diamètre que le diamètre D dudit tube (1). Cette couronne périphérique est, dans la forme de réalisation illustrée à la figure 2, constituée par une partie tronconique obtenue par moulage lors de la réalisation dudit tube (1) et dont la section va en dé­croissant vers l'extrémité (10) du tube. La tige de liai­son (6) du raccord additionnel (3) vient, quant à elle, se visser à l'intérieur d'une partie complémentaire (11) formée dans le raccord (3) du boitier B. Lors de la mise en place du raccord additionnel (4), la colle préalable­ment déposée tend à fluer et à venir s'insinuer entre les filets ainsi que dans la zone (12) comprise entre les différents éléments, ce qui après prise définitive, en­traîne une immobilisation définitive non seulement du tube (1) avec le manchon (3), mais également du raccord (5) avec les deux éléments précités.Different forms of implementation of the method according to the invention can be envisaged. According to a preferred form illustrated by FIG. 2, form in which the tubular element (1) is fitted around the surface (3) of the housing B, the fitting of these two elements being carried out either concentrically or by providing a slight slope similar to an interlocking type Morse cone well known in the field of mechanics, that is to say a fitting having a taper of about 1/20 and which allows to obtain not only a centering, but an excellent blocking, the additional element (4) is essentially in the form of a "plug" of which the accessible part or "head" (5) from outside the tube (1) has a recess (for example with a hexagon socket) in order to be able to actuate it, and the downstream part or "connecting rod" (6 ) has a threaded area (7). The additional element or plug (3) is introduced inside the tube (1) so that the peripheral surface (8) of the head (5) comes to rest and press against the inside of the surface (9 ) of the tube (1) which is in the form of a peripheral crown of smaller diameter than the diameter D of said tube (1). This peripheral crown is, in the embodiment illustrated in FIG. 2, constituted by a frustoconical part obtained by molding during the production of said tube (1) and the cross section of which decreases towards the end (10) of the tube. The connecting rod (6) of the additional connector (3), for its part, is screwed inside a complementary part (11) formed in the connector (3) of the housing B. During installation of the additional fitting (4), the previously deposited adhesive tends to creep and creep between the threads as well as in the area (12) between the different elements, which after final setting, results in a final immobilization not only of the tube (1) with the sleeve (3), but also the fitting (5) with the two aforementioned elements.

La figure 3 illustre une variante du mode de rac­cordement illustré à la figure 2 dans lequel le tube (1) est également emmanché autour du raccord de liaison (3). Dans cette variante, la tête (5) vient plaquer non pas contre un plan incliné (8) formé à l'intérieur du tube (1), mais contre une couronne interne, désignée égale­ment par la référence (8) et située orthogonalement par rapport à l'axe XX de l'ensemble.FIG. 3 illustrates a variant of the connection method illustrated in FIG. 2 in which the tube (1) is also fitted around the connection fitting (3). In this variant, the head (5) presses not against an inclined plane (8) formed inside the tube (1), but against an internal crown, also designated by the reference (8) and located orthogonally relative to to the XX axis of the assembly.

La figure 4 illustre une autre forme de mise en oeuvre du procédé selon l'invention dans lequel l'emman­chement du tube (1) est réalisé non pas autour du raccord (3), mais à l'intérieur de ce dernier.FIG. 4 illustrates another form of implementation of the method according to the invention in which the fitting of the tube (1) is carried out not around the connector (3), but inside the latter.

Comme précédemment, la liaison définitive du tube et du raccord est obtenue au moyen d'un raccord addition­nel (4) dont une partie vient plaquer contre l'intérieur de la surface de l'élément à l'intérieur duquel il a été introduit (dans le cas présent le tube), et dont l'autre partie vient se visser à l'intérieur du second élément.As before, the final connection of the tube and the connector is obtained by means of an additional connector (4), part of which comes to press against the inside of the surface of the element inside which it has been introduced (in in this case the tube), and the other part of which is screwed inside the second element.

Il a été constaté, par rapport aux solutions anté­rieures faisant appel soit uniquement au collage, soit uniquement au vissage, qu'un tel assemblage présentait des caractéristiques de résistance à l'arrachement, à la compression nettement améliorées et qu'il était prati­quement impossible de désolidariser le tube de boitier support.It has been found, compared with previous solutions using either only bonding or only screwing, that such an assembly exhibited characteristics of tear resistance, of compression significantly improved and that it was practically impossible to disconnect the support box tube.

Par ailleurs, s'il est préférable de réaliser la mise en place du raccord additionnel par introduction à l'intérieur de l'élément tubulaire, il est possible, bien entendu en fonction de la disposition des tubes par rap­port aux raccords principaux, d'envisager d'effectuer cette mise en place en passant à l'intérieur desdits raccords, le raccord additionnel venant alors se visser dans un filetage complémentaire formé à l'extrémité du tube. Une telle possibilité est illustrée par la figure 5.Furthermore, if it is preferable to implement the additional fitting by introduction inside the tubular element, it is possible, of course depending on the arrangement of the tubes with respect to the main fittings, consider carrying out this positioning by passing inside said fittings, the additional fitting then being screwed into a complementary thread formed at the end of the tube. One such possibility is illustrated in FIG. 5.

Bien entendu, l'invention n'est pas limitée aux exemples de réalisation décrits précédemment, mais elle en couvre toutes les variantes réalisées dans le même esprit.Of course, the invention is not limited to the embodiments described above, but it covers all the variants produced in the same spirit.

Claims (5)

1/ Procédé de raccordement et d'assemblage d'élé­ments tubulaires selon lequel la liaison des différents tubes (1) entre eux est obtenue au moyen de raccords ou manchons (2), les extrémités (10-3) de ces deux éléments étant emboitées l'une à l'intérieur de l'autre et la liaison étant obtenue par collage, caractérisé en ce que, après emmanchement des deux pièces l'une à l'intérieur de l'autre et avant prise de la colle, on introduit à l'in­térieur de l'un des éléments un raccord additionnel (4) dont une partie (5) vient plaquer contre l'intérieur de la surface (8) de l'élément à l'intérieur duquel il a été introduit, et dont l'autre partie (6) vient se visser à l'intérieur du second élément, la prise définitive de la colle étant réalisée après mise en place de cet élément de jonction additionnel.1 / Method for connecting and assembling tubular elements according to which the connection of the different tubes (1) to each other is obtained by means of fittings or sleeves (2), the ends (10-3) of these two elements being fitted one inside the other and the connection being obtained by gluing, characterized in that, after fitting the two parts one inside the other and before setting the adhesive, the following is introduced: inside one of the elements an additional connector (4), a part (5) of which presses against the inside of the surface (8) of the element inside which it has been introduced, and whose l 'other part (6) is screwed inside the second element, the final setting of the adhesive being carried out after installation of this additional joining element. 2/ Procédé selon la revendication 1, caractérisé en ce que le raccord additionnel (4) est introduit à l'in­térieur de l'élément tubulaire (1) et vient se visser à l'intérieur du raccord (3) proprement dit.2 / A method according to claim 1, characterized in that the additional connector (4) is introduced inside the tubular element (1) and is screwed inside the connector (3) itself. 3/ Procédé selon la revendication 1, caractérisé en ce que lorsque le tube (1) est emmanché à l'extérieur du raccord (3), cet emmanchement étant soit cylindrique, soit légèrement conique, la tête (5) de l'élément de raccordement additionnel (4) vient plaquer contre une surface (8) formant butée.3 / A method according to claim 1, characterized in that when the tube (1) is fitted outside the fitting (3), this fitting being either cylindrical or slightly conical, the head (5) of the element additional connection (4) presses against a surface (8) forming a stop. 4/ Procédé selon la revendication 3, caractérisé en ce que la surface (8) formant butée se présente sous la forme d'un plan incliné ou sous la forme d'une couronne orthogonale à l'axe XX de liaison.4 / A method according to claim 3, characterized in that the surface (8) forming a stop is in the form of an inclined plane or in the form of a ring orthogonal to the axis XX of connection. 5/ Cadre de bicyclette dont les éléments tubulaires qui le composent sont raccordés entre eux au moyen de manchons, caractérisé en ce que, au moins au niveau du boitier de pédalier, au moins une partie des tubes qui composent ledit cadre sont reliés entre eux par emman­chement et collage, un élément additionnel de blocage (4) étant introduit à l'intérieur de l'un des éléments (tube ou raccord), une partie (5) de cet élément venant plaquer contre l'intérieur de la surface de l'élément à l'intérieur duquel il est introduit, et l'autre partie (6) venant se visser à l'intérieur du second élément.5 / bicycle frame, the tubular elements of which it is composed are connected to each other by means of sleeves, characterized in that, at least at the level of the bottom bracket, at least part of the tubes which compose said frame are interconnected by fitting and bonding, an additional blocking element (4) being introduced inside one of the elements (tube or fitting), a part (5) of this element pressing against the inside of the surface of the element inside which it is introduced, and the other part (6) coming to be screwed inside the second element.
EP89420439A 1988-11-17 1989-11-14 Process for the connexion and assembly of tubular elements, particularly for producing a bicycle frame, and the frame produced thereby Expired - Lifetime EP0369903B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89420439T ATE93462T1 (en) 1988-11-17 1989-11-14 METHODS OF CONNECTING AND ASSEMBLING TUBE ELEMENTS, PARTICULARLY FOR BUILDING A BICYCLE FRAME AND THE NEW FRAME BUILT WITH IT.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8815200 1988-11-17
FR8815200A FR2639068B1 (en) 1988-11-17 1988-11-17 METHOD FOR CONNECTING AND ASSEMBLING TUBULAR ELEMENTS, PARTICULARLY FOR MAKING A BICYCLE FRAME AND NEW TYPE OF FRAME THUS OBTAINED

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EP0369903A1 true EP0369903A1 (en) 1990-05-23
EP0369903B1 EP0369903B1 (en) 1993-08-25

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US (1) US5018900A (en)
EP (1) EP0369903B1 (en)
AT (1) ATE93462T1 (en)
DE (1) DE68908668T2 (en)
FR (1) FR2639068B1 (en)

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AU622354B1 (en) * 1990-10-15 1992-04-02 Kun-Nan Lo Connector for chain stay and seat stay
WO1996000855A1 (en) * 1994-06-28 1996-01-11 Schlaich Joerg Bonding of steel sections
GB2469932A (en) * 2009-05-01 2010-11-03 Moulton Development Ltd Bicycle frame incorporating tension members
WO2014114499A1 (en) * 2013-01-28 2014-07-31 Zf Friedrichshafen Ag Cylinder unit having an adhesive bond
CN111219550A (en) * 2020-01-13 2020-06-02 上海鹿特士环保科技有限公司 Natural gas pipeline with flange sealing joint and installation method thereof

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US5129666A (en) * 1991-01-10 1992-07-14 Richard Lai Aluminum alloy bicycle frame
US6270104B1 (en) * 1992-05-29 2001-08-07 Trek Bicycle Corporation Composite bicycle frame and methods for its construction
US5346237A (en) * 1993-07-14 1994-09-13 Wang Tsai Te Bicycle frame consisted of carbon fiber frame tubes and metal connectors
US5364115A (en) * 1993-08-13 1994-11-15 Klein Bicycle Corporation Dropout and dropout joints for bicycles
EP0832620A3 (en) * 1996-09-25 1999-01-13 Biomet, Inc. Modular component connector
DE59914437D1 (en) * 1999-06-09 2007-09-13 Robert Plersch Edelstahl Techn UNIVERSAL CONNECTION SYSTEM
ATE337126T1 (en) * 2002-05-10 2006-09-15 Tweco Prod Inc WELDING CONTACT TIP AND WELDING DIFFUSER
US7314315B1 (en) * 2003-02-03 2008-01-01 Ashot Salvaryan Gearbox for cold metal cutting machine
CA2648444C (en) * 2006-04-04 2014-03-18 Smith & Nephew, Inc. Trial coupler systems and methods
DE102014105049A1 (en) * 2014-04-09 2015-10-15 Dt Swiss Ag Fork component for an at least partially muscle-operated bicycle

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AU622354B1 (en) * 1990-10-15 1992-04-02 Kun-Nan Lo Connector for chain stay and seat stay
WO1996000855A1 (en) * 1994-06-28 1996-01-11 Schlaich Joerg Bonding of steel sections
GB2469932A (en) * 2009-05-01 2010-11-03 Moulton Development Ltd Bicycle frame incorporating tension members
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WO2014114499A1 (en) * 2013-01-28 2014-07-31 Zf Friedrichshafen Ag Cylinder unit having an adhesive bond
CN111219550A (en) * 2020-01-13 2020-06-02 上海鹿特士环保科技有限公司 Natural gas pipeline with flange sealing joint and installation method thereof
CN111219550B (en) * 2020-01-13 2021-06-08 广西熹海新能源有限公司 Natural gas pipeline with flange sealing joint and installation method thereof

Also Published As

Publication number Publication date
US5018900A (en) 1991-05-28
DE68908668T2 (en) 1993-12-23
EP0369903B1 (en) 1993-08-25
DE68908668D1 (en) 1993-09-30
FR2639068B1 (en) 1990-12-28
ATE93462T1 (en) 1993-09-15
FR2639068A1 (en) 1990-05-18

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